Kassette.



1. R. KELLEY.

KASSETTE.

APPLycATIoN FILED JULY 26,1915.

Patented Jan. 23, 1917.

JOHN ROBERT KELLEY, 0F COVINGTON, KENTUCKY.

Patented Jan. 23, 1917.

Application filed July 26, 1915. Serial No. 42,063.

KASSETTE.

192139-208, Specification of Letters Patent.

To all whom it may concern w Be it known that I, JOHN ROBERT KEL- LEY, a citizen of the United States, residing at Covington, -in the county of Kenton and State of Kentucky, have invented certain new and useful Improvements in Kassettes, of which the following is a specification. l

My invention relates to improvements in kassettes or holders for photographic plates to be used in connection with X-ray ap# paratus.

' One of its objects is to provide an improved plate holder of metallic construction. y e

Another object is to. provide a plate holder having a plurality of interchangeable or detachable backs. l

. Another object is to provide in a plate-I holder improved means to hinge the back and frame members together.

My invention also comprises certain details of form, combination, and arrangement all-of which will be fully set forth in the description of the accompanying drawings inwhich:

Figure 1 is a rear plan view of a kassette embodying my improvements. Fig. 2 is sectional `view through the backdetached andon linev X X' of Fig. l.` Fig. 3 is a sectional view through the frame with the back detached and on line Z Z of Fig. l:v

Fig. 4 is a view similar to Fig. 2 of another backto be employed interchangeably with the back Fig. 2. Fig. 5 is an enlarged detail perspective partly in section of one 'of the hinge sockets. Fig. Gis an enlarged perspective detail of one of the hinge members detached.

The accompanying l drawings illustrate the preferred embodiment of my invention in which A represents a rectangular frame built up of metal and having a continuous' sheet B of aluminum or similar material preferably a metal, which is pervious to X- rays extending across one face. Aisheet 3 of paper or slmilar materialL impervious to ordinary light waves but pervious to X-rays is preferably laid upon or attached to the inner face of the sheet B. The sensitive photographic plate H is placed upon the sheet 3 beingprotected thereby against direct contact with the metal plate B, and also against the action of ordinary light waves either by reflection or transmission through the sheet 3.

A back plate of metal D seeFig. 2 vis provided with an inner facing material of' paper, felt, or similar material 4 which is lmpervlous to ordinarylight waves, and

also adaptedt0 absorb and prevent the re-4 Hectlon of ordinary light upon the sensitive plate. The metal plate D is of a material according to the result desired either pervious or impervious to X-rays and rigid or non-iiexiole so as to bear uniformly over its inner face against the sensitive plate. The back-plate. D has centrally pivoted thereto at 5 a leaf spring E the opposite ends of which engage recesses 6 in the walls of the frame A to press the plate D in con-- tact with the photographic plate and to lock the plate D in vplace relative to the frame A.

The frame A ispreferably built up of one or more sections 7 preferably one which is U-shaped or channel shaped in cross section and is bent and mitered at the corners, with the plate B in place. Sections of sheet metal 8 bent to channel shape are telescoped into thesides and ends of the section 7, and

serve to reinforce the section 7 and to form' an inner facing`for the frame A and a strong rigid hollow metal frame. The sections 7 and 8 are preferably soldered or brazed together to form a rigid rectangular frame. At the points. where the hinge sockets 10 are to be located one ofthe sections 8 is reinforced internally p by short blocks of solid bar metal 9 into which said socketsmay be subsequently drilled and cut. If desired asolid bar 9 the full length of one side of the frame may be employed and telescoped into the section 7 on the side where the hinge sockets are to be formed as indicated by Fig. 5, instead of employing a reinforced ychannel shaped section 8.

As illustrated in F ig.` 4, it is at times terchangeably withone or more frames A.

In order to provide a hinge which will enable the plates D and D to be readily detaclied or used interchangeably, and will provide for the requisite adjustment of the back plate to and from; the front plate B, to accommodate sensitive plates of diifeent 30 fore said sections are assembled in the frame.

thickness^and also to guide the back plate 'accurately to position without lateral movement relative to the sensitiveplate, I provide cylindrical recesses for hinge sockets 10 cut into the solid metal with narrower slots or recesses 14 leading therefrom to the inner edge of the frame. A piece of felt or similar facing material 15 with recesses to register with the recesses 14: is preferably attached to the inner face of that side of the frame` in which the hinge sockets are formed. Hinge members 16 provided with heads 17 to enter the vcylindrical hinge sockets 10 and narrow necks 18 to enter the recesses 14, are attached by rivets 19 or'otherwise tothe back plates D and' D so that either plate may be inter changeably hinged t the frame A and readilydetached therefrom and the side walls of the recesses 14 will guide the back plate by -engaging the necks 18. When the plates D or D are lifted to' a position at .right .angles to the frameA said back plates will be supported upon the ends or heads 17 of the hinge members 16 resting 'at the bottoms of the sockets 10..- For convenience in lifting .the plates D and D rings 20vare :pivotally attached to the rear faces thereof, and when not in use lie against the face of said plates.

The slots 6 to receive the ends of the spring are stamped in the sheet metal sections 8l ber The apparatus herein illustrated and de- 'scribed is capable ofl considerable modification without departing from the principle of my invention.

Having 'described my invention what I claim is:

1. A plate holder comprisingv aface plate,

, a hollow metal frame formed by telescoping 40 channel-shaped members one into the other encircling and carrying said face plate, and

tion relative to said frame and to prevent lateral movement of said back plate.

sheet metal frame comprising channel shaped members telescoped oneinto another to form a hollow frame of substantially rectangular cross-section.

3. A plate holder comprising a face plate, a rigid sheetl metal frame encircling and carrying said face plate and formed by telescoping channel-shaped members one into the other, and a metalback plate having metal hinge members to detachably connect said back plate to said frame and toguide said back plate into position relative to said frame.

' 4. A plate holder comprising a face plate, a rigid metalv frame encircling said face plate, hinge sockets in one section of said frame having narrower channels leading therefrom at one side, a back plate having hinge members provided with heads to enter said sockets and necks to enter said lateral channels to detachably connect said back plate 4to said frame and to guide it to position therein.

a metal frame encircling and carrying said face Vplateand provided with hinge sockets,

and a plurality of detachable and interchangeable-back plates each provided with hinge'members to enga e said hinge sockets to guide said back plates accurately to position relative to said frame. a back plate having metal hinge members t0 guide said back plate .accurately into posi- In testimony whereof I have aiiixed my signature in the presencel of two witnesses.

p JOHN ROBERT KELLEY.

- Witnesses: Y

. lED Gmvn, fp

MARY B. STEWART. 

